| 摘要 |
PURPOSE: To previously prevent the plural times of slave light emissions by providing a tar circuit for canceling the signal, which is output from a light receiving circuit unit, during the timing operation. CONSTITUTION: A timer circuit of soft wear is built in a CPU, and when a quick input of the light of other electronic flashing device is received by a SLV-CKT and it is input from the SLV-OUT terminal to the INT-SLV terminal of the CPU, the timer built in the CPU starts the timing operation, and during the timing operation of the timer, even in the case where the signal from the SLV-CKT is input to the INT-SLV temtinal again, this input is canceled. A quick rise of the received light is converted to the pulse signal by the circuit SLV-CKT, and the output is received by an interrupting input terminal INT- SLV. S, D terminals of the slave function setting signal switch 6 are connected to an input and output ports PS, PD through diodes D1, D2. Plural times of slave light emission are thereby previously prevented. Plural times of slave light enmissions are thereby previously prevented. |
